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Beolab Penta 1 Amplifier problem

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Not Answered This post has 0 verified answers | 6 Replies | 1 Follower

stanpan
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stanpan posted on Sun, Nov 5 2017 8:12 AM

Hello !

There are problems with the amplifier. One work great, another one faulty.
After a while, it sounds like a contact error(
crackling sound), then it stops, the led will be orange.
After restarting work fine
It is when it turns off after 5 minutes, when it turns off later. (work 5-6 hours, and the led goes orange, and not work)
What could be the problem?

I use my Penta from PC.

 

Best regards

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Dillen
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Welcome to Beoworld!

- Cracked solder joints at the driver transistors and where the ribbon cable from the front panel meets with the amplifier board.
- Bad capacitors.
- Bad idle current trimmer.
- Any combination of the above.

Martin 

stanpan
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Hello!

 

Many thanks for fast reply!

if I use it to service, can it be worse?
Can be bigger damage?

 

Steve

Dillen
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Dillen replied on Sun, Nov 5 2017 12:36 PM

It may just stop working altogether at some point, or it may go with a bang and cause more damage.
That depends on where the problem is.
It will not get better by itself.

Martin 

stanpan
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Thank you for your reply.

In this case I will not use it, just after the service.


Are there easily replaceable components or are specially made difficult to obtain?

Dillen
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I doubt you will have to replace any components, other than perhaps a trimmer or two (and then adjust).
But all electronic components in the Penta amps are fairly common.

Martin 

stanpan
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This is good news thank you for the reply Martin.

 

All the best!

Steve

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